Everyone has the capacity to change their behaviour...but I think that the desire must come from within if the change is to take place without resentment or conflict.
It sure doesn't hurt to suggest definite ways to go about that though.

To avoid him perceiving critisism, you might open the conversation by saying something like, "I'd like to improve our relationship so please tell me something that I do, or don't do that I can change that would help that to come about."
As hard as it may be, if it is reasonable, try to accomodate it. Then maybe when he sees that you are doing what he suggested, he might come to you with the same sort of request.

With love, Erika